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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jan. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2021 | Dec. 31, 2020
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Accumulated deficit |  | $ 199,834,539 | $ 159,367,353 |  |
Cash, cash equivalents, and marketable securities |  | 151,500,000 |  |  |
Milestone payment received |  | (12,270,465) | (3,178,066) |  |
Receivables under "ERC" |  | 366,551 | 366,551 | $ 738,778 | $ 738,778
Revenue recognized under "ERC" |  |  | 191,463 | $ 191,199 |
Long-lived assets impairment |  | 0 | 0 |  |
Grant income |  | 0 | 0 |  |
Tax credit carryforward amount |  | 40,900,000 |  |  |
Research and development |  | 49,968,585 | 36,448,039 |  |
Comprehensive loss |  | (39,676,044) | (22,156,973) |  |
Net unrealized gain on marketable securities |  | 791,142 | $ 130,569 |  |
Subsequent event |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Revenue recognized under "ERC" | $ 190,582 |  |  |  |
Domestic Country |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Operating loss carryforwards |  | $ 97,100,000 |  |  |
Operating loss carryforwards expiration year |  | 2032 |  |  |
Tax credit carryforward limitations on use |  | The post December 31, 2017 net operating losses generated of approximately $56.3 million will carryforward indefinitely, but may be subject to an 80% limitation upon utilization. |  |  |
Operating loss carry forwards indefinitely |  | $ 56,300,000 |  |  |
State and Local Jurisdiction |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Operating loss carryforwards |  | $ 176,800,000 |  |  |
Operating loss carryforwards expiration year |  | 2028 |  |  |
General Business |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Tax credit carryforward amount |  | $ 11,800,000 |  |  |
Operating loss carryforwards expiration year |  | 2035 |  |  |
Research Tax Credit Carryforward |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Tax credit carryforward amount |  | $ 6,300,000 |  |  |
Tax credit carry forwards expiration Year |  | 2027 |  |  |
Research Tax Credit Carryforward | California |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Tax credit carryforward amount |  | $ 2,100,000 |  |  |
Warrant |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Antidilutive securities |  | 15,666,804 | 13,268,807 |  |
Commercialization and Distribution Agreement with Nippon Shinyaku Co, Limited, Japan | Investor |  |  |  |  |
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |  |
Accounts receivable |  | $ 10,000,000 | $ 10,000,000 |  |

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